1. ADVANCED TECHNOLOGY: Fish tank ozone generator uses ionisation technology to produce ozone to clean the fish tank cover, break down nitrites and restore clarity to the water. 2. CONNECTION TO AIR PUMP: Aquarium ozone generator cannot be used in water, it needs to be used in conjunction with an air pump, a hose connection is sufficient. 3. DECONTAMINATION: Fish tank air water ozonator releases high concentrations of active oxygen every minute, actively decomposing odours, formaldehyde, nitrite and other harmful substances, quickly solving pollutants from the source. 4. EASY TO USE: Aquarium ozone generator can be used continuously and can be switched off if the water is clear and started on again when the water quality deteriorates. 5. NOTE: Aquarium ozone generator continuously maintains the water quality in the tank. It is recommended for ventilation and can be adjusted for use according to water quality.<br><br>ADJUSTABLE: Water quality is generally adjusted to a middle value of 5. To avoid water backing up in the tank, it is recommended to place the ozonator 7.9 inches above the tank level. Item Type:Aquarium Ozone Generator Use:Aquarium Ozone Machine Air Pump, Water Purification, Algae Removal Ozone Machine. Rated Power:6W Ozone Quantity:120MG Rated Power:3W Maximum Air Volume:3L/Min Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC 220V Colour:Black Material:Plastic<br><br>Package Contents: 1 x Aquarium Ozone Generator 1 x Hose<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.